Improvement in attachments for direct-acting steam-pumps



0. T". E ARLE. Attachments for Direct-Anti ng Steam-Pumps. NO. 142,092.Patented August 26AM? IN VENTOR OSCAR T. EARLE, OF N ORWALK,CONNECTICUT.

IMPROVEMENT IN ATTACHMENTS FOR DIRECT-ACTING STEAM-PUMPS.

Specification forming part of Letters Patent No. 142,092, dated August26, 1873; application filed March 3, 1873.

To all whom it may concern:

Be it known that I, OSCAR T. EARLE, of

Norwalk, in the county of Fairfield and State of Connecticut, haveinvented certain Improvements in Attachments for Direct-Actin gSteam-Pumps, of which the following is a specification:

My invention relates to anew and improved hand-power attachment, whichisdesigned sufficient steam-pressure, or other usual motor;

and it consists in making an opening through the back-head of thesteamor water cylinder of the pump, and in providing said head with ascrew-cap, which may be detached at pleasure, or other suitable means ofclosing said aperture when desired 3 and, further, in providing saidhead with a detachable stuffingbox, which can be secured over the mouthof the aperture in the place of the screw-cap, when the hand-powerattachment is in use, said attachment consisting of an auxiliarypiston-rod, passing through the detachable stuffing-box and the aperturein the cylinder, being so constructed that one end may be readilyattached to and detached from the back of the piston, and the other soas to be readily attached to and detached from a detachable leversecured to the head or other portion of the cylinder or pump, or to someother equivalent device for operating said rod by hand. r v

The closely-connected steam-pumps differ from the ordinary direct-actingsteam-pumps in having no tappet-arms intervening between the steam andwater cylinders, for the purpose of working the main valves, the saidvalves being operated directly by the piston in the steam-cylinder. Thisclass of pumps possesses many advantages over the ordinary direct-actingsteam-pumps, being lighter and occupying much less space, which renderssuch pumps, especially the larger sizes, particularly applicable tomining operations and for marine purposes, where engines occupyingunnecessary room or of great weight are inconvenient. These advantageshave been offset heretofore in a great. measure by the want of a properhand-power attachment. No such attachment has ever been provided forsuch pumps heretofore, rendering them useless for pumping until there isa snfficient head of steam on in the boilers, and, in the absence ofother common motors, sometimes employed. My invention is particularlydesigned to overcome this defect, and render such pumps more perfect intheir appointments.

The drawing represents a longitudinal section of a closely-connectedpump with my invention attached.

A represents the water-cylinder, and B the piston or plunger. Crepresents the steamcylinder, and D its piston. E represents thepiston-rod, connecting the pump and engine pistons, and F the auxiliarypiston-rod, which may be made to pass through the head of either thesteam or water cylinder, and connected with either the steam-piston orpumpplunger. I prefer, however, to pass it through the steam-cylinderhead and connect it with the steam-piston, as I have shown. The rod maybe secured to the piston in any convenient manner that will admit of itsbeing readily attached or detached, but I prefer the arrangement shownin the drawing, in which the rod is provided with a screw-thread at oneend, by means of which it can be fastened in a few moments in ascrew-socket on the piston, by simply giving it a few turns in theproper direction. The screw-socket G, shown in the drawing, serves twopurposes, acting not only as a socket, but also as a jam-nut to securethe screw-nut H. I represents a detachable hand-lever, secured to theheadof the cylinder or any other portion of the pump, and connected withthe auxiliary piston in any convenient manner that will admit of itsbeing readily attached or detached.

The lever may be attached to the cylinderhead by means of a link, J, toprevent the piston-rod from being pulled out of line by the lever; butthe same end may be accomplished by a variety of well-known devices.

By attaching the lever to the cylinderhead taohable auxiliarypiston-rod, passing through which I prefer to other portions of thepump, the head of the steam or water cylinder and it is evident that itmay be set either horizonconnected to the piston of the same,substantally, perpendicularly, or at any desired antially as described.

gle, as may be found convenient, by simply OSCAR T. EARLE. turning thecylinder-head, the bolts and holes being properly arranged for thispurpose. Witnesses:

What 1 claim is-- J. G. LATHROP,

The hand-lever I, in combination with the del R. H. WHITTLESEY.

